My fan theory is that Genji died on the operating table, but Mercy wasn’t gonna let that sweet cyborg body go to waste, so she kidnapped and wired up a teenage American anime fan who’s been having the time of her life cosplaying an angsty ninja with a hot ass for the past 10 years.

Why did a global paramilitary organization swoop in to save the underperforming son of a notorious criminal family to become a (presumably multi-million dollar) killing machine? I know “to help dismantle the organization”, but there must be a more straightforward, less risky way of doing that. Were they just waiting for someone to get Murphy’d?

I wouldn’t be surprised to see a team of the “world police” (because that’s basically what Overwatch became after the Omnic Crisis) being sent to investigate the reports of a battle involving the head of the big local mafia. They probably barely arrived in time to find Genji’s remains, left to die by his brother.
And then there’s Mercy’s tendency to value survival above all else. She sees someone in need, she helps – not paying much attention to cost, strategies or even possible risks and side effects. We saw the same later with Reyes/Reaper.

Holy crap, Mercy must have trained under Fran Madaraki… (For those who don’t know, Fran Madaraki has among other horrific things is the doctor who oversaw the birth of the Flying Spaghetti monster, created a working immortality serum that causes full body cancer as a side effect(As in you literally become one giant blob of tumor and not the fun kind like Deadpool…)

Come to think of it Fran Madaraki and Mercy probably went to the same medical school….

Well, not really, considering Fran was taught at home by her father while Mercy went out and got a “Dr” attached to her name at a university somewhere.
Also, I’d take being Reaper over the mildest procedure Fran has ever done any day of the year. She’s THAT bad.

He did have training as an assassin that was uncommon in them. Mercy saving him was probably her doing (like others mentioned), then, well, even the second brother is still an impressive combatant. Why not offer the job and see if he can make something of himself?

Is the line with the carbon monoxide detector a reference to the women complaining about the headache that supposedly the beeping of the carbon monoxide detector gave her, so she removed the batteries? (also why Genji is in the hospital, probably for carbon monoxide poisoning)

Pretty sure the implication is that Hanzo just took out the batteries so that Genji would get poisoned and die. Not sure it’s a reference to anything, especially since I can’t find what you’re referring to.

Conversion to full body prosthesis to lessen the strain on him, maybe? Organ damage and replacement? His father figured, just go for the full replacement to make him stronger? The possibilities are many.

Who said he lost his torso ? Its probably in a pitiful state, just like the rest of his body if he isint missing limbs but full on cybernetic augmentation dosent necessarily means missing pieces. In many science-fiction stories, people who undergo cybernetic limb enhancement also receive some form of modification to the torso, what with muscle groups and keeping pace with the augmented speed/strenght lest the body tears itself apart.

And now here is my head canon for the conversation where the Shimada Elders ordered Hanzo to kill Genji:
Elders: “Hanzo, Genji is refusing to buy the new playstation system.”
Hanzo: “I know. He plans on buying the new XBox instead.”
Elders: *beat*
Elders: “Kill him.”
Hanzo: “What!?!?”
Elders: “NO SHIMADA SHALL EVER BETRAY OUR CLAN BY BUYING A DIFFERENT GAME SYSTEM!!!!”